1. Air in a balloon does 39 J of work while absorbing 94 J of heat. What...
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1. Air in a balloon does 39 J of work while absorbing 94 J of heat. What is its change in internal energy?
2. An aluminum vat is 18 m long at room temperature (20°C). How much longer is it when it contains boiling water at 1 atm pressure?
3. An apartment has the dimensions 13 m by 7 m by 4 m. The temperature is 35°C, and the relative humidity is 56 percent. What is the total mass (in kg) of water vapor in the air in the apartment?
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